package org.example.多对一.dao;

import org.example.多对一.bean.DeptInfo;
import org.example.面向对象.db.DBManager;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

public class DeptInfoDAO {
    private Connection conn;
    private PreparedStatement ps;
    private ResultSet rs;
    public DeptInfo findDeptById(int deptNo){
        DeptInfo di = new DeptInfo();
        String sql = "select * from dept where deptno=?";
        conn = DBManager.getConnection();
        try {
            ps = conn.prepareStatement(sql);
            ps.setInt(1,deptNo);
            rs = ps.executeQuery();
            while (rs.next()){
                di.setDeptNo(rs.getInt(1));
                di.setDname(rs.getString(2));
                di.setLoc(rs.getString(3));
            }
        }catch (SQLException e){
            System.out.println(e.getMessage());
        }
        return di;
    }
}
